Sight-feed lubricator



(No Model.)

W. WOODWA-RD.

SIGHT FEED LUBRIGATQR.

No. 407,805. Patented July 30, 1889.

UNITED STATES PATENT OFFICE.

VILLIAM IVOODIARD, OF CHICAGO, ILLINOIS.

SIGHT-FEED LUBRICATOR.

SPECIFICATION forming part of Letters Patent No. 407,805, dated July 30, 1889.

Application led April 19, 1889. Serial No. 307,806. (No model.)

To @ZZ whom t may concern:

Be it known that I, WILLIAM VooDwARD, residing at Chicago, in the county of Cook and State of Illinois, and a subject of the Queen of Great Britain, have invented a new and useful Improvement in Sight-Feed Lubricators, of which the following is a specification, reference being had to the accompanying drawings, in which- Figure l is a vertical section. Fig. 2 is a top view of the washer which holds the packing to the piston-head in Fig. l. Fig. 3 is a section at line 3 of Fig. l, looking to the right.

The leading objects of my invention are to provide improved devices for iilling the reservoir of a sight-feed lubricator, to construct the sight-feed devices in such a manner that they can be located over or near the points to be lubricated, even though they be a considerable distance from the reservoir, and to provide other improvements, all of which I accomplish as illustrated in the drawings and hereinafter described.

That which I claim as new will be pointed out in the claims.

In the drawings, A represents an oil-reservoir.

a is an opening through which' oil can be 3o poured into the reservoir when the cap h has been removed.

B is a piston-rod, which is hollow.

C is a piston-head.

c is va packing secured in place on the under side of the piston-head by means of a metal washer d, which washer has a recess e in its upper side, and is provided with a number of holes f for the passage of oil, which holes are covered by a spring-valve g.

7L is a passage through the piston-head C, which communicates with the recess e and is controlled by a valve t', the stemj of which is arranged to come in contact with the spring D, which is arranged to act upon the pistonhead C and force it down.

E is a plunger located in the hollow pistonrod B.

F is a lever pivoted to the upper end of the plunger E.

G is a support on the top of the piston-rod.

la is a link connecting the support and one arm of the lever F.

Z is a screw by means of which and a nut the oil-reservoir can be secured on a bracket or any other suitable place.

Il is a pipe leading from the oil-reservoir A.

I is a branch from a 'coupling R, connected with the pipe II.

J is a casting in which there is a small chamber m, with which the branch pipe I communicates. This casting is provided with a chamber or passage K, from which there is a passage n, which communicates with a passage o in a stem L, the upper end of which is secured in the lower end of the casting J. The lower end of this stem is adapted to be inserted in any suitable socket over a point which is to be oiled. On each side of the casting .I there is a glass tube M M', which tubes are supported in suitable castings p p' q q, connected with the casting J.

r is a passage from the chamber m to a chamber in the casting p, from which there is a passage to the glass tube M, which passage is controlled by a screw s. The upper end of the glass tube M communicates with a chamber in the casting p', the entrance to which is controlled by a valve, and from which there is a passage t into the chamber K. u is another passage leading from the chamber m through which oil can flow to a chamber in thecasting q, and from thence to the glass tube M and from such tube through a chamber in the casting q to a pipe fu, which leads to some point which is to be lubricated.

s is a valve controlling the flow of oil from u to M. The liow of oil from the reservoir A through the pipe His controlled by a valve w. Oil can be drawn off from the reservoir through a faucet N.

I have not shown any oil in the reservoir A, because its representation would produce confusion. The piston-head is shown partly raised, a position which it could not occupy unless there were oil in the lower part of the reservoir.

The operation is as follows: WVhen the reservoir is empty, or nearly so, the piston-head will be at its lowest point in the reservoir. Then oil is to be poured into the reservoir through the passage c, filling the reservoir above the piston-head. The hollow piston-rod B, plunger E, and lever F serve the IOO purpose of a pump to transfer the oil from AIO the upper side of the piston-head to the lower side. When the plunger rises, oil will pass from t-he upper portion of the reservoir through the passage h into the recess e and hollow piston-rod B, and when the plunger and when the piston-head has nearly reached' its highest point the valve-stem j will come in contact with one of the coils of the spring D, opening the Valve t', and then the pumping operation must cease. lVhen the valve w is open, oil will be forced by the pressure of the spring D from the reservoir A through the pipe I-I and branch pipe I into the chamber m, from which it can fiow through the passage r, glass tube M, and passage t to the chamber K, and therefrom through the passages n and o to a point to be lubricated. Oil can also flowfrom the chamber'm, through the passage u, tube IW and tube@ to another similar to those already described.

A separate valve must be provided to control the flow of oil through the pipe P. Oil can thus be conveyed from a single reservoir A to two or more independent machines-for example, as to two or more dynamos-and the supply of oil from the reservoir to all of `these machines can be cut off by the valve w, or the supply to any one may b e cut oif by an independent valve properly located.

If desired, other pipes corresponding with I-I may be connected with the oil-reservoir, each leading to other sight-feed devices like those shown in Fig. l.

The reservoir A can be filled without arresting the flow therefrom, and the' spring D will, through the piston-head, act upon the contents of the reservoir below the pistonhead while oil is being transferred from the upper part to the lower part of the reservoir.

I have described J as a casting because I know of no way in which it can be practi- ,cally made except by casting. The way in `which this part is made is not material. I have also described a chamber m in the part J, which, as shown, is much larger than the outlet-passages connected therewith. The size of this chamber is not material except that it should be large enough to receive as much oil as is required by the several sight- "feeds connected with the part J.

of oil through the piston-head, a hand-pumpv by operating which the oil is forced from the upper oil-chamber through the piston-head into the lower `oil-chamber, and a pipe for connecting the latter with the oil-distributing part of the lubricator, substantially as described. l

2. In a lubricator, the combination of an oil-reservoir, a piston-head dividing the reservoir into an upper oil-holding and alower oil-receiving chamber, valves for the passage ofoil through the piston-head, a tubular piston-rod, a reciprocating plunger in the piston-rod, and a hand-lever for reciprocating the plunger and thereby pumping the oil from the upper oil-chamber through the piston-head into the lower oil-chamber, and a pipe for connecting the latter with the oildistributing part of the lubricator, substantially as described.

3. In a lubricator, the combination, with a series1 of sight-feed tubes, and a casting having a chamber which connects with the said tubes, of an oil-reservoir, a piston-head di- IOO viding the reservoir into an upper oil-holding and a lower oil-receiving chamber,valves for the passage of oil through the piston-head, a hand-pump by operating which the oil is forced from the upper 'oil-chamber through the piston-head into the lower voil-chamber, and a pipe connecting the latter with the chambered casting and having a single valve which controls the passage of oil to the casting, substantially as described.

4:. The combination of a reservoir, a pistonhead having an oil-passage, and a tubular piston-rod, a washer secured to the pistonhead and having a recess and an oil-passage, valves for governing the flow of oil through said passages, a spring pressing on the piston-head, and a reciprocating plunger in the piston-rod for pumping the oil from one side of the piston-head to the opposite side, substantially as described.

5. In a sight-feed lubricator, the combination of `a casting J, having a chamber on in its lower portion, and a passage K in its upper portion which communicates with 'a stem to conduct the oil to a part to be lubricated, a sight-tube M, communicating at its lower end with the chamber and at its upper end with the passage, a sight-tube M communicating at itsJ lower end with the chamber and at its upper end with a pipe for conveying the oil to Aanother part to be lubricated, and

IIO

an oil-reservoir having a pipe-connection with said chamber of the casting for supplying it with oil, substantially as described.

6. A lubricator consisting of a chanibered casting, a series of sight-feed tubes supplied with oil from the chamber of the casting, an oil-reservoir, and a pipe leading from the reservoir to the chamber of the casting and provided with a single valve w for governing the passage of oil to all the sight-tubes, substantially as described.

7. The co1nbination,witl1 an oil-reservoir A and a pipe-connection H, of the casting J having in its lower portion the chamber m, the castings p and q, having respectively the passages o" and u communicating with said chamber, the sight-feed tubes M M and the branch pipe I, connecting the chamber of the casting with the pipe-connection of the oilreservoir, substantially as described.

VILLIAM WOODWARD. Witnesses:

ALBERT H. ADAMS, HARRY T. JONES. 

